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  2. I tried the Bomaker Polaris 4K projector — and it's a ...

    www.aol.com/entertainment/tried-bomaker-polaris...

    Not long ago, a 4K ultra-short-throw projector for $1,800 would have been remarkable. Now that 85-inch TVs can be had for under $2,000 and sometimes even under $1,500? Much less remarkable.

  3. Dropped ceiling - Wikipedia

    en.wikipedia.org/wiki/Dropped_ceiling

    Approved drop out (or drop-out) ceilings allow the installation of a dropped ceiling beneath existing fire sprinklers because the tiles, sometimes called melt-out ceiling tiles, are heat-sensitive and are designed to fall from the dropped ceiling suspension grid during a fire, allowing the sprinklers to spray their water.

  4. Ceiling projector - Wikipedia

    en.wikipedia.org/wiki/Ceiling_projector

    The ceiling projector or cloud searchlight is used to measure the height of the base of clouds (called the ceiling) above the ground. It is used in conjunction with an alidade, usually positioned 1000 ft (300 m) away and wherever possible set at the same level. The projector is normally set at 90°, although 71° 31' may be used, in relation to ...

  5. The Xgimi Aura ultra-short-throw 4K projector is a home ... - AOL

    www.aol.com/xgimi-aura-ultra-short-throw...

    For premium support please call: 800-290-4726 more ways to reach us

  6. Projection screen - Wikipedia

    en.wikipedia.org/wiki/Projection_screen

    Projection screens may be permanently installed on a wall, as in a movie theater, mounted to or placed in a ceiling using a rollable projection surface that retracts into a casing (these can be motorized or manually operated), painted on a wall, [1] or portable with tripod or floor rising models as in a conference room or other non-dedicated ...

  7. Throw (projector) - Wikipedia

    en.wikipedia.org/wiki/Throw_(projector)

    Throw ratio is a characteristic of the lens of the projector (although "projector throw" and "lens throw" are often used synonymously). Some projectors (typically larger, more expensive ones) are able to accept a variety of lenses, while lower cost projectors tend to have a permanent lens that is not designed to be changed.

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